CN102576118A - Lighting fixture having an optical wave guide and a descartes lens or descartes reflector - Google Patents

Lighting fixture having an optical wave guide and a descartes lens or descartes reflector Download PDF

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Publication number
CN102576118A
CN102576118A CN2010800455558A CN201080045555A CN102576118A CN 102576118 A CN102576118 A CN 102576118A CN 2010800455558 A CN2010800455558 A CN 2010800455558A CN 201080045555 A CN201080045555 A CN 201080045555A CN 102576118 A CN102576118 A CN 102576118A
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CN
China
Prior art keywords
optical element
photocon
guide structure
section
described guide
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Granted
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CN2010800455558A
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Chinese (zh)
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CN102576118B (en
Inventor
哈特维格·乌尔里希
马蒂亚斯·莫尔克
亨宁·伦恩
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Osram GmbH
Osram Co Ltd
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Osram Co Ltd
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    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/0001—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems
    • G02B6/0005—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type
    • G02B6/0008—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings specially adapted for lighting devices or systems the light guides being of the fibre type the light being emitted at the end of the fibre
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V5/00—Refractors for light sources
    • F21V5/04—Refractors for light sources of lens shape
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21V—FUNCTIONAL FEATURES OR DETAILS OF LIGHTING DEVICES OR SYSTEMS THEREOF; STRUCTURAL COMBINATIONS OF LIGHTING DEVICES WITH OTHER ARTICLES, NOT OTHERWISE PROVIDED FOR
    • F21V7/00—Reflectors for light sources
    • F21V7/0091—Reflectors for light sources using total internal reflection
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F21—LIGHTING
    • F21K—NON-ELECTRIC LIGHT SOURCES USING LUMINESCENCE; LIGHT SOURCES USING ELECTROCHEMILUMINESCENCE; LIGHT SOURCES USING CHARGES OF COMBUSTIBLE MATERIAL; LIGHT SOURCES USING SEMICONDUCTOR DEVICES AS LIGHT-GENERATING ELEMENTS; LIGHT SOURCES NOT OTHERWISE PROVIDED FOR
    • F21K9/00—Light sources using semiconductor devices as light-generating elements, e.g. using light-emitting diodes [LED] or lasers
    • F21K9/60—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
    • F21K9/61—Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction using light guides

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Planar Illumination Modules (AREA)
  • Non-Portable Lighting Devices Or Systems Thereof (AREA)
  • Light Guides In General And Applications Therefor (AREA)

Abstract

The invention discloses a lighting fixture comprising a light-guiding structure having a light source (6) which is connected to an optical element (10) via a light-guiding element, the optical element having a section (11) which is ellipsoid in some sections.

Description

Have optical conductor and Descartes-lens or-luminophor of reverberator
Technical field
The present invention relates to a kind of guide structure of the said characteristic of preamble according to claim 1.
Background technology
Document WO 2006/054199A1 discloses this guide structure.It has light source, for example is LED or the element that sends laser beam that this light source is connected with the optical conductor of rod optically.The end portion section design back to light source of optical conductor has a kind of specific structure or has a kind of specific shape, and it is used for the emission characteristics of light beam is exerted an influence.Therefore change the emission characteristics of light source like this through guide structure, promptly light is approximate subsequently for example with in Halogen lamp LED or gas-discharge lamp sends identically.
The disadvantage of this solution is that promptly the structure in the end portion section of optical conductor has reduced the emissive power that is transmitted of light source and stoped the light of light source to be transferred in the target area effectively through described emission characteristics.
Summary of the invention
The objective of the invention is to: propose a kind of guide structure that is used to change the emission characteristics of light source, its simple structure and efficient.
This purpose realizes through the described guide structure of a kind of characteristic according to claim 1.
According to the present invention, guide structure has light source, and this light source is connected with photocon optics.The optical element that on photocon, also has been coupled, its surface design back to photocon is the shape of portion's section of ellipsoid of revolution, approximately extend perpendicular to the longitudinal axis of ellipsoid of revolution on the plane, geometric cross section of center section.
The advantage of this solution is; Promptly utilize the light that passes through the guide structure guiding of primary light source to produce secondary light source; Its place and luminous (planning luminous of the surface through oval shape) advantageously can be matched with uses or following optical system, and wherein the place can different with the place of primary light source and for example be arranged in the focus of optical system.Realized with method by this way, promptly the mechanical component of primary light source, do not influence optical delivery like bar, electric current transport or cooling body.
Particularly advantageous design proposal draws in the dependent claims.
That photocon preferably is designed to rod and is connected with primary light source optics and passes through the light output window and optical element is coupled through the light input window.
The longitudinal axis of photocon and the longitudinal axis of optical element preferably extend approximately coaxially to each other.
In another design proposal of the present invention, the light output window of photocon approximately is arranged in first focus of optical element of the ellipse of revolution bodily form, and thus, the light that from optical element, penetrates is collimation.
In another preferred design proposal of the present invention, the portion's section that approximately is designed to the ellipse of revolution bodily form of optical element is a direct reflection, and light beam focuses in second focus of elliptical area and expands to therefrom in the semispace of dorsal part thus.The secondary source that produces at place, this place by this way can advantageously be positioned in the focus of reverberator or near it now like this, i.e. its all its light of reflection.
Reverberator for example can be designed as oval or parabola shaped.Through the optic shape of such description, input is coupled in the photocon and the light of transmission therefrom is transferred to target from its light output window, its optical density of not obvious reduction.
In order to make that light output part section beam reflected by direct reflection can be owing in the refraction of surface and deflection uncontrollably when from optical element, penetrating; Therefore preferably be designed to the hemisphere bodily form towards the surface of induction element, wherein the central point of hemisphere body section approximately is in second focus of efferent section of oval shape or slightly with respect to this second focal shift ground layout.
Photocon and the transmission of optical element power, material is connected and/or form fit interconnect.
Optical element for example is made of plastics and photocon is processed by glass.
Description of drawings
Specify the present invention according to embodiment below.Shown in the figure:
Fig. 1 has illustrated the guide structure according to first embodiment in skeleton view;
Fig. 2 has illustrated the guide structure according to first embodiment in side view;
Fig. 3 has illustrated in synoptic diagram according to the light beam in the guide structure of first embodiment;
Fig. 4 has illustrated the guide structure according to second embodiment in skeleton view;
Fig. 5 has illustrated the guide structure according to second embodiment in skeleton view; With
Fig. 6 has illustrated in synoptic diagram according to the light beam in the guide structure of second embodiment.
Embodiment
Guide structure 1 according to first embodiment has been shown in skeleton view in Fig. 1.This guide structure has the photocon 2 that is approximately rod, this photocon through light output window 4 with light source 6, for example be that LED optics is connected.The light beam of light source 6 is directed to light output window 8 through photocon 2 subsequently and gets in the optical element of arranging above that 10, and this optical element has the light output part section 11 corresponding to portion's section design of ellipsoid of revolution.
Fig. 2 discloses the guide structure 1 according to Fig. 1 in side view.Can identify at this, the light beam that promptly sends from light source 6 after light output window 8 about get into the optical element 10 taperedly and through corresponding to the light output part section 11 of portion's section design of ellipsoid of revolution when the output from optical element 10 by straightening.The plane, geometric cross section of light output part section 11 is approximately extended perpendicular to the rotation of ellipsoid of revolution and is directed to photocon 2.Ellipsoidal umerical excentricity-as for the known ground of technician-correspondingly be chosen as
Figure BDA0000151568930000041
wherein n be the refractive index of medium, optical element 10 is made up of this medium.
Fig. 3 is schematically illustrating the part according to the guide structure 1 of first embodiment in the side view.Can identify the structure of optical element 10 at this.Except light output part section 11, it also has the hemisphere body section 14 towards photocon 2, and optical element 10 approximately is designed to ellipse thus.The longitudinal axis 16 of light output part section 11, hemisphere body section 14 and photocon 2 extends approximately coaxially to each other.
The light output window 8 of photocon 2 approximately is arranged in first focus 18 corresponding to the light output part section 11 of the portion section design of ellipsoid of revolution of optical element 10.
Optical element 10 can be processed by inexpensive plastics, and this is because it is kept apart through the high temperature in the zone of photocon 2 quilts and light source 6, avoids thus because high temperature injury arrives plastic material.Photocon 2 is for example processed by glass, and it has enough mechanical stabilities thus, so that fix optical element 10.
Optical element 10 power transmission, material connect and/or form fit ground is connected with photocon 2. Element 2,10 for example utilizes the bonding and/or optical element 10 of immersed method to have the space, and the transmission of photocon power, material connect and/or form fit ground submerges in this space.
Fig. 4 has illustrated the guide structure 1 according to second embodiment in skeleton view.The surface of the ellipse of revolution bodily form of optical element 10 light output part section 11 in other words has the surface 20 of direct reflection at this, and it makes light beam deflect on the reverberator 22 through optical element 10.The reverberator 22 of oval shape is passed by photocon 2 about the center greatly, and wherein the longitudinal axis of photocon 2 and reverberator 22 is consistent.
Fig. 5 shows the guide structure 1 according to Fig. 4, and has light beam 12.Can identify at this, promptly this light beam is from the direction of optical element 10 orientating reflex devices 22 and by this reflector reflects.In second embodiment, make light beam 12 packs through reverberator 22 subsequently according to Fig. 5.
Fig. 6 has illustrated the guide structure 1 according to second embodiment in diagrammatic side view.The light beam 12 that from photocon 2, penetrates arrives in the light output part section 11 of oval shape through hemisphere body section 14; On the surface 20 of the direct reflection of light output part section 11 towards the direction reflection of second focus 24 of light output part section 11; Again pass hemisphere body section 14; Penetrate from optical element 10 through this section, arrive reverberator 22 and pass through this reflector reflects.Approximately vertically hit through the shape of hemisphere body section 14 with through light beam 12, make hardly for example owing to refraction has influence on its direction.
Therefore in second focus 24, realized utilizing the secondary source of the light illumination of primary light source 6 basically.
Reverberator 22 approximately is the hemisphere body section 14 of semisphere ground around optical element 10 as in Figure 4 and 5, finding out ground especially, and all are shone on it by surperficial 20 beam reflected 12 thus.First focus of reverberator is arranged in second focus 24 on surface 20 of oval shape in this example.
Be contemplated that in light source, use a plurality of LED, they also send the light of different colours.Subsequently these light beams 12 are mixed through photocon 2.Can before photocon 2, utilize dichromatic beam splitter to mix subsequently.
Light beam is inner by reflection fully at photocon 2.
The diameter of photocon 2 can be matched with the size of light source 6.
Optical element 10 is compared with the diameter of photocon 2 and is designed greatly more, and then the characteristics of luminescence of light beam 12 just can be exerted one's influence more accurately.Yet the size of photocon 10 receives the restriction of mechanical stability of the photocon 2 of supporting optical component 10.
In addition, compare with the size of reverberator 22, the size of optical element 10 is restricted, and therefore shows beam reflected with vignette as few as possible.
Can the light input of Different Light 6 be coupled in the guide structure 1, it can at random be changed.Different light sources has the identical characteristics of luminescence subsequently respectively through guide structure 1.
Be contemplated that in addition promptly guide structure 1 can be used for installing additional the luminophor with the reverberator that has existed according to second embodiment according to Fig. 4 to 6.The use field then for example is headlight and back light, OP lamp, profile of tooth lamp or the different lamp of automobile, like floor lamp.
Disclose a kind of guide structure with light source, light source is connected with optical element through photocon.Optical element has part at this and is portion's section of oval shape.

Claims (13)

1. guide structure; Have photocon (2) that is connected with light source (6) optics and the optical element (10) that is coupled with said photocon; It is characterized in that; The surface back to said photocon (2) of said optical element (10) has the shape of portion's section (11) of ellipsoid of revolution, and approximately extend perpendicular to the longitudinal axis of said ellipsoid of revolution on the plane, geometric cross section of wherein said section (11).
2. guide structure according to claim 1, wherein said photocon (2) approximately is rod, and has light input window that is connected with said light source (6) optics and the light output window (4,8) that is coupled with said optical element (10).
3. according to each described guide structure in the aforementioned claim, the longitudinal axis of the longitudinal axis of wherein said photocon (2) and said optical element (10) extends approximately coaxially to each other.
4. according to claim 2 or 3 described guide structures, the said smooth output window (8) of wherein said photocon (2) approximately is arranged in first focus (18) on said surface (11) of the portion's section that is designed to said ellipsoid of revolution of said optical element (10).
5. according to each described guide structure in the aforementioned claim, wherein said photocon (2) is made up of the medium with approximately identical refractive index with said optical element (10).
6. according to each described guide structure in the aforementioned claim, the light beam (12) that wherein from the light output part section (11) of said optical element (10), penetrates is collimation basically.
7. according to each described guide structure in the claim 1 to 5, the said light output part section (11) of the oval shape of wherein said optical element (10) is a direct reflection.
8. according to each described guide structure in the aforementioned claim, wherein said optical element (10) has the hemisphere body section (14) towards said photocon (2).
9. according to claim 7 or 8 described guide structures, the central point of wherein said hemisphere body section (14) approximately is in second focus (24) on said surface (11) of direct reflection of the portion's section that is designed to said ellipsoid of revolution or squints along longitudinal axis with respect to said second focus slightly.
10. each described guide structure according to Claim 8 or in 9, wherein reverberator (22) is at least in part around said hemisphere body section (14).
11. guide structure according to claim 10, said first focus of wherein said reverberator are arranged in said second focus on said surface of oval shape of said optical element or are arranged near said second focus.
12. according to each described guide structure in the aforementioned claim, wherein said photocon (2) and said optical element (10) power transmission, material is connected and/or form fit interconnect.
13. according to each described guide structure in the aforementioned claim, wherein said optical element (10) is processed by transparent plastic and said photocon (2) is processed by glass.
CN201080045555.8A 2009-10-09 2010-10-06 Lighting fixture having an optical wave guide and a descartes lens or descartes reflector Expired - Fee Related CN102576118B (en)

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DE102009048830A DE102009048830B4 (en) 2009-10-09 2009-10-09 Lichtleitstruktur
DE102009048830.8 2009-10-09
PCT/EP2010/064901 WO2011042458A1 (en) 2009-10-09 2010-10-06 Lighting fixture having an optical wave guide and a descartes lens or descartes reflector

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CN102576118B CN102576118B (en) 2015-04-08

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EP (1) EP2486434A1 (en)
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CN107062103A (en) * 2013-02-01 2017-08-18 夸克星有限责任公司 Include the lighting device of multiple light-emitting components
CN107208864A (en) * 2015-01-15 2017-09-26 法雷奥照明公司 One of light guide supports the Vehicular illumination device of another light guide
US10495807B2 (en) 2013-09-17 2019-12-03 Quarkstar Llc Light guide illumination device for direct-indirect illumination
US10823905B2 (en) 2011-08-08 2020-11-03 Quarkstar Llc Illumination devices including multiple light emitting elements

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US10823905B2 (en) 2011-08-08 2020-11-03 Quarkstar Llc Illumination devices including multiple light emitting elements
US10859758B2 (en) 2011-08-08 2020-12-08 Quarkstar Llc Illumination devices including multiple light emitting elements
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CN107062103A (en) * 2013-02-01 2017-08-18 夸克星有限责任公司 Include the lighting device of multiple light-emitting components
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WO2011042458A1 (en) 2011-04-14
EP2486434A1 (en) 2012-08-15
US9285526B2 (en) 2016-03-15
US20120195059A1 (en) 2012-08-02
JP2013507728A (en) 2013-03-04
CN102576118B (en) 2015-04-08
DE102009048830A1 (en) 2011-04-14
DE102009048830B4 (en) 2012-01-12
JP5677443B2 (en) 2015-02-25

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